<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <i class="arrowleft"></i>
        <!-- <img src="~assets/img/common/back.svg" alt=""> -->
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles" :key="index" class="title-item" :class="{active : index === currentIndex}" @click="titleClick(index)">{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>
<script>
import NavBar from 'components/common/navbar/NavBar'
export default {
  name:'DetailNavBar',
  components:{
    NavBar
  },
  data() {
    return {
      titles:['商品','参数','评论','推荐'],
      currentIndex:0,
    }
  },
  methods: {
    titleClick(index){
      this.currentIndex = index;
      this.$emit('detailNavBarTitleClick',index)
    },
    backClick(){
      this.$router.back();
      // this.$router.go(-1);
    },
  },
  
}
</script>
<style scoped>
.title{
  display: flex;
  font-size: 13px;
}
.title .title-item{
  flex: 1;
}
.active{
  color: var(--color-high-text);
}
i{
  border: solid black;
  border-width: 0 1px 1px 0;
  display: inline-block;
  padding: 5px;
}
.arrowleft{
  transform: rotate(135deg);
  -webkit-transform: rotate(135deg);
}

.back img{
  vertical-align: middle;
}
</style>